Muffler



FIG. 1 is a perspective view of a muffler showing the new design;

FIG. 2 is a top view thereof, the left, right, and bottom views being amirror image;

FIG. 3 is a front view thereof,

FIG. 4 is a back view thereof;

FIG. 5 is an exploded perspective view of FIG. 1; and,

FIG. 6 is an exploded perspective view opposite of that in FIG. 5.

CLAIM The ornamental design for a muffler, as shown and described.